bugfix: fix cpu everage

CPU usage was average from when ssh connected to current.
It should be average every 10 seconds.

Author: liaotonglang

package.json

@@ -1,7 +1,7 @@
 {
   "name": "sguala",
   "productName": "sguala",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "description": "My Electron application description",
   "main": ".webpack/main",
   "scripts": {

src/main/sshRemote.ts

@@ -844,6 +844,18 @@ export class SshClient {
       const idled = Idle - PrevIdle
 
       const CPU_Percentage = (totald - idled) / totald
+
+      this.prev = {
+        user: user,
+        nice: nice,
+        system: system,
+        idle: idle,
+        iowait: iowait,
+        irq: irq,
+        softirq: softirq,
+        steal: steal,
+      };
+
       return CPU_Percentage;
     }
   }